Catheter



FIG. 1 is a perspective view of an embodiment of the catheter;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The broken lines in the figures show portions of the catheter that form no part of the claimed design. 

CLAIM The ornamental design for a catheter, as shown and described. 